Happy New Year! It is time to celebrate our new product WA7 “Fireflies”. Pre-order is now available. Order now to take advantage of our special appreciation price. http://wooaudio.com/products/wa7fireflies.html Specifications: o Single-ended, class-A, transformers output o Linear external high-performance power supply o Two 6C45 driver/power tubes o C-Media 6631 USB chip o TI PCM5102A 32-bit DAC chip o Headphones impedance : 8-600 Ohms o Input impedance: 100 Kilo-Ohms o Sampling rate: up to 32-Bit, 192kHz o Inputs: 1 Asynchronous USB2.0, 1 RCA o Outputs: 1 1/4" and 1 1/8" headphone outputs, 1 RCA (same connector as the input) o Max output: approx 1 watt @ 32 ohms o Frequency response: 11Hz to 27kHz, +/-0.5dB o Distortion: <0.03% o S/N: 95dB o Power consumption: 25W max o Mains supply: 100-120V, 220-240V, 50/60Hz, user selectable o Finish: Anodized aluminum o DC cord length: 4.25 ft or 1.3 m o Dimension: AMP: 4.8" L x 4.8" W x 5.1" H with glass PSU: 7.5" L x 3.5" W x 2.2" H o Weight: AMP - 5.3 lbs / 2.4kg, Glass - 3.3 lbs / 1.5kg PSU - 2.8 lbs / 1.4kg Features: o Handmade output transformer with Nickel Alloy core o 32-Bit, 192kHz high resolution playback o Ultra-low jitter USB 2.0 runs on Asynchronous mode o high and low impedance output via switch o Open load protection will automatcially enagage to prevent the amp from damaging when no headphones are plugged in o Multi-functional switch for USB input, RCA input, and RCA output via D/A. o All-aluminum chassis with no screws visible from any viewing angles o High clarity tube protection glass o Multi-layer military grade PCBs o Customized driver for Windows Vista/XP/7/8 o USB Audio Class 2.0 is natively supported by Apple OS X version 10.6.4 and above without installing driver Jack @ Woo Audio P.S. You are welcome to try the production units at THE 2013 @ Flamingo Las Vegas Jan 8 to Jan 11th, 2013.